Increased greenhouse-gas intensity of rice production under future atmospheric conditions

The study reports:

Increased atmospheric CO2 and rising temperatures are expected to affect rice yields and greenhouse-gas (GHG) emissions from rice paddies. This is important, because rice cultivation is one of the largest human-induced sources of the potent GHG methane (CH4) and rice is the world’s second-most produced staple crop

Agriculture is a major anthropogenic source of GHGs, and climate-change
concerns have spurred efforts to reduce GHG emissions from agricultural
systems. Rice is a staple food for nearly half of the people in the world. Rice paddies account for 11% of the planet’s arable land and are responsible for 10% of human-induced CH4 emissions or 20% of total agricultural CH4 emissions. The global warming potential of GHG emissions from rice systems is roughly four times higher than either wheat or maize.

So, because of increased atmospheric carbon dioxide, we will have increased food and that increased food will increase Greenhouse gases. UC Davies university reports:

“Together, higher carbon dioxide concentrations and warmer temperatures
predicted for the end of this century will about double the amount of
methane emitted per kilo of rice produced,” said Chris van Kessel,
professor of plant sciences at UC Davis and co-author of the study,
published in this week’s edition of Nature Climate Change.
“Because global demand for rice will increase further with a growing
world population, our results suggest that without additional measures,
the total methane emissions from rice agriculture will strongly
increase.”

Popular Posts

This alarmist propaganda goes against the real data. Penn State Professor Michael Mann has made similar claims of modern temperatures being the warmest, but such “Hockey Stick” temperature claims have been demolished in the scientific literature.

Opinion by Anthony Cox
I wrote before about the ABC’s bias and the real
cost of the ABC to the Australian community. Since then the Abbott
government has announced reasonable budget cuts but the ABC has sunk further
into its betrayal of its Charter and of the Australian community.
In a recent poll about the farcical China/US deal about
emissions the ABC’s The Drum initially showed this result: 12/11/2014: China and the US have struck a new deal to limit greenhouse gas emissions. Do you think Australia will need to adjust its climate change policies as a result? No 55% Yes 44% Unsure 1%

15205 votes counted
Given the ABC’s Left/Green readership a remarkable result.
However shortly the result
was changed to this: 12/11/2014: China and the US have struck a new deal to limit greenhouse gas
emissions. Do you think Australia will need to adjust its climate change
policies as a result?Yes 76% No 23% Unsure 1% 6001
votes counted
How could you trust an organisation which lies like that and
distorts public …